She was quietly enjoying reading in her private room.

There was a long line at the station.

He was waiting in line.

The sound was so quiet that I could hardly hear it.

In Sanskrit phonology, retroflex sounds play an important role.

A coronal is a sound that is pronounced using the tip or the upper part of the tongue.

Retroflex sounds are difficult to pronounce.

Retroflex is a phonetic feature that does not exist in Japanese.

A dorsal sound is a sound that is pronounced by the back of the tongue approaching or touching the palate or pharynx.

She is wearing braces.